Is there a Matrix Bridge for RCS? RCS is neither SMS nor is it Google Chat.
Edit: this isn't to claim Beeper is better. Just stating that technically there is something on offer that Matrix Bridges doesn't support. I think I'd still prefer Matrix with Bridges over Beeper.
Edit: apparently Beeper is based on Matrix. Can't confirm whether their own repo would introduce any dependencies for their bridge that isn't in the main repo for Matrix. So it's hard to say.
Yes. "Beeper adding support" is really them making a new Matrix bridge, and they open source all of their bridges, so just use theirs. It's here: https://github.com/mautrix/gmessages/tree/main
So that does change things, but doesn't necessarily confirm it would natively work with Matrix (though doesn't discount it either). Is there confirmation that mautrix bridges are cross-compatible to matrix? Technically Beeper is built off of mautrix which is based on Matrix but isn't necessarily the same as Matrix. I don't know much about Beeper as I only learned of it today.
Maybe I'm wrong, but I thought that Matrix was a protocol, while mautrix was a client framework for the Matrix protocol written in Golang. Mautrix bridges are bridges for Matrix based on the mautrix framework. Beeper uses the Matrix protocol with some bridges (and maybe other components) based on mautrix; it's basically a proprietary commercial fork of Synapse and Element with better-integrated bridges. I have several mautrix bridges on my Matrix server, and every mautrix bridge I see (including gmessages) says it's for Matrix.
Beeper adds more polish, meaning that you don't need to manually configure bridges or maintain the Synapse server. It also gives you better indications of what bridge a room is from than Element does. If you know how to set up a Matrix server, you probably don't need it, but it's nice to have the option.